Unit installation

2008 SCION xB THERMOSTAT REPLACEMENT
Procedure
Issue A: 04/28/08 Page 9 of 48
4. Coolant System Parts Removal & Installation.
(a) Remove top engine cover. 10 mm socket.
Remove under engine covers. (Fig.4-1)
(b) Drain engine coolant into a clean receptacle for
re-use later. Caution: Be sure to wear eye and
hand protection. Also, be sure to allow radiator
and engine to cool sufficiently before opening
system to drain. Loosen Radiator Drain Cock
Plug and Cylinder Block Water Drain Cock
Plug. (10 mm wrench-Fig 4-2)
(
c) Remove OE Thermostat housing and factory
82° C (180°F) thermostat. (Fig. 4-3). Note: You
m
ay need to temporarily remove oil dipstick for
better access. Use OE rubber thermostat gasket
and place onto the TRD supplied 71°C (160°F)
thermostat. (Fig.4-4)
(d) Install TRD 71° C (160°F) thermostat. Be sure
jiggle valve is in the 12 O’Clock position within
+/- 10 degrees. (Fig. 4-5). Replace thermostat
housing. (Torque to 80 in-lbs)
(e) Close all water drain valves. Tighten the
radiator drain hand tight only. Torque the
engine block drain to 80 in-lbs.
Fig. 4
-
3
10 mm
Fig. 4
-
5
Fig. 4
-
4
10 mm
10 mm socket
Fig 4
-
1
Fig. 4-2